Maisie turns senior this year having been one of Britain's most successful espoir and junior gymnasts. In 2014 she claimed the espoir British all-around title and then went on to win silver at the 2015 European Youth Olympics on beam. At the 2015 British Championships Maisie won all-around silver and then went one better last year, taking the all-around junior title as well as taking floor and vault silver. At the 2016 Junior European Championships, Maisie competed as part of Team GB, finishing 4th in the all-around competition against a high quality field. In 2017 at the British Championships, she performed a number of notable routines, taking all-around silver as well as floor gold.